Improvement in molds for casting chilled rollers



UNITED STATES A. HAMMOND, OFIJACKSONVILLE, ILLINOIS.

IMPROV'EMENT IN AMOLDS FOR CASTING CHILLED ROLLERS.

Specification forming part of Letters Patent No. 40, [67, dated O.tobcr 6, 1863.

To alwwm t may concern:

Be it known that I, A. HAMMOND, of Jacksonville, in the county of Morgan and State of Illinois, have invent-ed a new and useful Improvement in Molds for Casting Chilled Rollers; and Ido hereby declare that thefollowing is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of' this specification, in which- Figures l and 2 are central vertical sections of a mold with my improvement, Fig. l1 representing it after and Fig. 2 before the pouring. Fig. 3 is a plan of the central flask. Fig. et is a plan of the lower flask.

Similar letters of reference indicate corresponding parts in the several ligures.

This invention consists in a certa-in construction of a mold for casting chilled rollers,

. whereby not only the peripheries but the ends of the rollers, the journals, and the portions which receive the gears are chilled and made perf'ectly true with the peripheries, andthe portions which receive the gears are made with feathers or key-stats.

To enable others skilled in the art to make and use my invention, I will proceed to de scribe its construction and operation.

A is the middle flask or chill, in which the body of' the rollers is produced, consisting cf a strong cast-,iron cylinder, with flanges a a at top and bottom. This cylinder is bored truly of a caliber to correspond with the diameter of the body of the roller, and its flanges are faced up perfectly true and perpendicular to the axis of its bore. The ends are also slightly counterbored, as shown at b b, to receive projections on the upper and lower flasks, B and O. The bottom of the upper ilask, B, and top of the lower one, O, are both alike, each being composed of a cast-iron plate, d, with a central socket, e, and they are faced to t the flanges of the middle or body flask, A, and provided with projections to enter the counter-bores b Zi of the latter `flask, to keep their sockets e e coneent-ric with the bore of that flask. The sockets e e are bored of proper size to form the journals f j' of the roller, and the parts g g for the reception of the gears and other wheels, and the parts g g may be cast with a feather, lz., as shown at the top of Fig. l, by providing a groove in the socket, or be cast with a groove, y', as shown at the bottom of Fig. l, by the insertion of' a feather, i, tightly into the groove j, as shown in Fig. 4. The plates d d are vfurnished with steadypins Z Z, to ent-er holes m m in the flanges a a of the llask A, and they are also provided with holes a a, for ventilation of the mold, (and of the core also, when one is used.) A wooden curb, lc, is put round each plate d to complete the flask.

In molding the roller I place in the socket c of each of the flasks B O a piece of wood or metal of a form to lit the interior of the said socket e, and of a length to extend from the faceot' the plate d as far as the length desired for the journal or shaft at that end of the roller, and I then place the flasks B G ona smooth flat board and ll them with sand in the usual manner. When the flasks are taken from the board aft-er having been filled with sand, the pieces of wood or metal above mentioned drop or are taken ont from the sockets e e. and the lower flask, O, is inverted, and the middle flask or chill, A, is put on it, and the top flask, B, put on, as shown in Figs. l and 2. If the roller is cast hollow, the coreis applied in the usual manner. The iron is poured into the mold at the top end of the shaft, where a suitable gate is left. The roller cast in this mold will require no turning or finishing either ofthe ends, ofits body, of' its journals, or of the parts of the shaft which receive the gears or other wheels, as all of those parts, besides being chilled, are perfectly true or concentric with the body ofthe roller.

\Vhat I claim as my invention, and desire to secnreby Letters Patent, is-

The mold composed ofthe cylindrical middle flask or chill, A, and the two flasks B O, made with sockets e c and plates d d, faced to iit the flanges of A, the whole combined substantially as and for the purpose herein specified.

A. HAMMOND. lVitnesses:

Trios. H. S'roRMs, JNO. C. IOFFENBERGER. 

